Salut. Poti incerca asa. Succes in continuare!
#include <iostream>
#include <string>
#include <string.h>
#include <conio.h>
using namespace std;
int main()
{
int i,n;
char s[100];
char vocale[11] = {'a','e','i','o','u','A','E','I','O','U'};
cin.get(s, 100);
n=strlen(s);
for(i=0;i<n;i++)
{
cout<<s[i];
if(strchr(vocale, s[i]))
cout<<"*";
}
getch();
}